Table of Contents
Why does MgO have a high melting point than Mgcl?
As the charge in the ionic lattice in Magnesium Oxide is two times as large, the ionic bonding is stronger so more energy is required to overcome the electrostatic attraction and break down the ionic lattice.
Why does MgO have a higher boiling point and melting point than NaCl?
NaCl contains attraction between Na+ & Cl- ions, whereas in MgO the attraction is between Mg+2 and O-2 ions, the attraction between ions in MgO is greater than NaCl. Therefore MgO will exhibit a higher melting temperature.
Why does MgO have a higher melting point than LiF?
The MgO contain more highly charged ions (Mg2+ and O2-) than LiF (Li+ and F-) and so it is more difficult to separate the ions from their solid state. The stronger the bond, the more energy required to separate ions. d) Stronger lattice energy results higher mp or bp.
Why does MgO have higher melting point than Na2O?
MgO and Al2O3 have a higher melting point than Na2O since the charges are higher, resulting in a stonger attraction between the ions. SiO2 has a giant covalent structure and hence a high melting point. There are strong covalent bonds between all the atoms and thus lots of energy is required to break them.
Why does MgO have a higher melting point than Na2O?
Why does CH4 have a low melting point?
Intermolecular forces between methane molecules C-H bonds are very weakly polarized because electronegativity difference between carbon and hydrogen atoms are very small. So their dipole – dipole interactions are too weak.
Why does CH4 have such a low boiling point in comparison to the other molecules?
Methane has a low boiling point because it has very weak intermolecular forces of attraction.
Why does MgO have high melting point?
This creates intermolecular electrostatic forces and thus the attraction is very high for solid MgO molecules. to break this force, we need higher energy and thus, higher temperature. therefore it has high melting point.
Why does MgO have a higher melting point than NaCl?
MgO has a higher melting point than NaCl because 2 electrons are transferred from magnesium to oxygen to form MgO while only 1 electron is transferred from sodium to chlorine to form NaCl.
Why is the melting point of MgO higher than NAF?
The melting point of MgO is higher than that of NaF because: Mg2+ is more positively charged than Na+ & O2- is more negatively charged than F-. When the bond between magnesium and fluorine is being formed, the electrons must divide equally between the two fluorine atoms, giving each only one electron.
Is MgO a compound or element?
A compound is chemical bonding between two or more atoms formed by sharing or transfer of electrons to attain a stable octet or duplet or metastable state. Here, Mg gives its 2 electrons to oxygen, thus forming Mg2+ and O2- ions, which later form a compound, Magnesium oxide (MgO).
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